RF vs Ham2K Portable Logger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RF
This app provides over 90 specialized tools for high-frequency electronics, catering to RF professionals, radio amateurs, and students. It offers calculations for PCB traces, filters, impedance, and more, with ongoing updates and new features planned.
- PCB Trace Width and Impedance
- LC/L/T/Pi Match Calculation
- Coax Cable Calculations
- Amplifier and Attenuator Cascade
- SWR/Reflection/Return Loss Conversion
- Filter Design (Butterworth, Chebyshev)
- RF Units Conversion
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Specialized on high frequency electronics for RF professionals, radio amateurs and students. RF-Toolbox is based on the popular Electronic Toolbox by Marcus Roskosch. This app contains some of the common tools of Electronic Toolbox but contains a wide range of additional tools, specialized for high frequency electronics, RF professionals, radio amateurs and students. Currently RF-Toolbox consists of more than 90 tools and like Electronic Toolbox, there are more to come over the time. Feature list: ■ PCB Trace Width (Internal and external Traces) ■ PCB Trace Resistance ■ PCB Trace Impedance (various trace types e.g. Microstrip, embedded Microstrip, Symmetric and Asymetric Stripline, Wire Microchip, Wire Stripline, Edge Coupled Microstrip and Stripline) PCB Crosstalk (Microstrip and Stripline) ■ LC L/T/Pi Match calculation ■ Coax Cable calculation (Standard and individual Types) ■ Amplifier and Attenuator cascade calculation ■ SWR / Reflection / Return loss conversion ■ Power Divider (Branchline, Ratrace and Wilkinson) ■ Capacitor Plate calculation ■ RLC Parallel, Series and Circuit calculation ■ Noise Figure conversion ■ Skin Depth calculation (various materials from Aluminum to Silver) ■ Butterworth Filter (also with plot of filter chart) ■ Chebyshev Filter (also with plot of filter chart) ■ R-C, L-C, R-L High/Low/Band-Pass Filter ■ RF Units conversion (quick conversion of frequently used units) ■ Air coil inductance calculation ■ Resistors, Capacitors, Inductors in Parallel / Series And there is much more... ■ Aktive Filter calculation tool ■ Antenna calculation tool ■ Delta Star calculation ■ Cable length / ampacity tool ■ PTC / NTC Temperature Resistance conversion ■ AC Ohms law tool ■ Zener diode circuit calculation ■ Constant current source tool ■ ASCII Table ■ Desktop calculator ■ Resistor/Capacitor/Inductor combinations tool ■ 4-20mA conversion tool ■ Passive cooling calculator ■ Audio Oscilloscope Please check out more screen shots on my website (WEBSITE Link on the left side). If you have questions, please feel free to contact me by using the Support button here, inside the App or on my website. Thank you! Marcus Roskosch
Ham2K Portable Logger
Log your amateur radio contacts (QSOs) efficiently while on the go. Supports popular operating events like POTA, SOTA, and Field Day, offering features like QRZ lookups, QSO maps, and offline data. Quickly find nearby parks and receive duplicate warnings.
- Log QSOs on the go
- Support for POTA, SOTA, Field Day
- QRZ.com name lookups
- QSO Maps
- Offline data files
- Duplicate QSO warnings
- Search nearby parks
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The best app to log your QSOs on the go. Support for Parks On The Air (POTA), Summits On The Air (SOTA), Field Day, Winter Field Day, Worldwide Flora and Fauna (WWFF) and more. Fast and efficient yet fully-featured: QRZ.com name lookups, QSO Maps, offline data files, contact rates, duplicate warnings, POTA spots, search parks nearby or by name, etc. See https://www.ham2k.com/legal/terms-of-service/
Screenshots
Verdict
The clearest difference is price: Ham2K Portable Logger at Free against RF's $7.99. Ham2K Portable Logger also leads on update cadence (monthly vs every 4 months). RF's advantage is in-app purchases (none vs 8) and ads (none vs shown). On review sentiment, ratings volume and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Ham2K Portable Logger is free to download; RF costs $7.99 up front. Ham2K Portable Logger sells 6 in-app purchases, starting at $2.99 per month. RF asks for nothing beyond the download.
RF holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 22 and 49 respectively. Written reviews point the same way: 91% of RF's written reviews are positive against 86% of Ham2K Portable Logger's.
RF ships an update every 4 months, Ham2K Portable Logger monthly. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.
| Parameter | RF | Ham2K Portable Logger |
|---|---|---|
| Price | $7.99 | Free — better |
| Rating | 4.9 (22 ratings) — better | 4.7 (49 ratings) |
| Positive reviews | 91.1% of reviews — better | 86.5% of reviews |
| Number of ratings | 22 | 49 — better |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.1 — better | 15.1 |
| Further details — not scored | ||
| Size | 92 MB | 118 MB |
| Age rating | 4+ | 4+ |
| Developer | Marcus Roskosch | Sebastian Delmont |
Customer experience
RF
Ham2K Portable Logger
In-app purchases
RF
No in-app purchases
Ham2K Portable Logger
- Ham2K Log Filer - Monthly$2.991 Month
- Ham2K Log Filer - Annual$24.991 Year
- Show a bit of support…2 variants$4.99
- Show your support!$12.99
- Show your support!$14.99
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- Show a lot of support!!!2 variants$29.99
Questions
Is RF free?
Is Ham2K Portable Logger free?
Which has better reviews, RF or Ham2K Portable Logger?
Do RF or Ham2K Portable Logger have ads?
Which is updated more often, RF or Ham2K Portable Logger?
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